Wake effect in interactions of ions with graphene-sapphire-graphene composite system
Само за регистроване кориснике
2021
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
We study the wake effect in a graphene-Al2O3-graphene composite system induced by an external charged particle moving parallel to it by using the dynamic polarization function of graphene within the random phase approximation for its π electrons described as Dirac's fermions and by using a local dielectric function for the bulk sapphire (aluminum oxide, Al2O3). We explore the effects of variation of the particle speed, its distance from the top graphene layer, the thickness of the Al2O3 layer, the damping rate of plasmons in graphene, and the doping density (i.e., Fermi energy) of graphene on the wake potential. For the velocity of the charged particle below the threshold for excitations of the Dirac plasmon in graphene, given by its Fermi velocity , strong effects are observed due to variation of the particle distance, while for the velocity of the charged particle above strong effects are observed due to varying the thickness of the Al2O3 layer, as well as due to plasmon damping of g...raphene's π electrons, and graphene doping.
Кључне речи:
Dielectric function / Graphene-insulator-graphene composite system / Plasmon / Plasmon-phonon hybridization / Wake effectИзвор:
Physica E: Low-dimensional Systems and Nanostructures, 2021, 126, 114447-Финансирање / пројекти:
- Ministry of Education, Science and Technological Development of the Republic of Serbia
- Serbia-Croatia bilateral project [337-00-205/2019-09/28]
- European Regional Development Fund - the Competitiveness and Cohesion Operational Programme [KK.01.1.1.01.0004]
- Natural Sciences and Engineering Research Council of Canada [RGPIN-2016-03689]
DOI: 10.1016/j.physe.2020.114447
ISSN: 1386-9477
WoS: 000596727700003
Scopus: 2-s2.0-85091677173
Колекције
Институција/група
VinčaTY - JOUR AU - Kalinić, Ana AU - Radović, Ivan AU - Karbunar, Lazar AU - Despoja, Vito AU - Mišković, Zoran L. PY - 2021 UR - https://vinar.vin.bg.ac.rs/handle/123456789/11685 AB - We study the wake effect in a graphene-Al2O3-graphene composite system induced by an external charged particle moving parallel to it by using the dynamic polarization function of graphene within the random phase approximation for its π electrons described as Dirac's fermions and by using a local dielectric function for the bulk sapphire (aluminum oxide, Al2O3). We explore the effects of variation of the particle speed, its distance from the top graphene layer, the thickness of the Al2O3 layer, the damping rate of plasmons in graphene, and the doping density (i.e., Fermi energy) of graphene on the wake potential. For the velocity of the charged particle below the threshold for excitations of the Dirac plasmon in graphene, given by its Fermi velocity , strong effects are observed due to variation of the particle distance, while for the velocity of the charged particle above strong effects are observed due to varying the thickness of the Al2O3 layer, as well as due to plasmon damping of graphene's π electrons, and graphene doping. T2 - Physica E: Low-dimensional Systems and Nanostructures T1 - Wake effect in interactions of ions with graphene-sapphire-graphene composite system VL - 126 SP - 114447 DO - 10.1016/j.physe.2020.114447 ER -
@article{ author = "Kalinić, Ana and Radović, Ivan and Karbunar, Lazar and Despoja, Vito and Mišković, Zoran L.", year = "2021", abstract = "We study the wake effect in a graphene-Al2O3-graphene composite system induced by an external charged particle moving parallel to it by using the dynamic polarization function of graphene within the random phase approximation for its π electrons described as Dirac's fermions and by using a local dielectric function for the bulk sapphire (aluminum oxide, Al2O3). We explore the effects of variation of the particle speed, its distance from the top graphene layer, the thickness of the Al2O3 layer, the damping rate of plasmons in graphene, and the doping density (i.e., Fermi energy) of graphene on the wake potential. For the velocity of the charged particle below the threshold for excitations of the Dirac plasmon in graphene, given by its Fermi velocity , strong effects are observed due to variation of the particle distance, while for the velocity of the charged particle above strong effects are observed due to varying the thickness of the Al2O3 layer, as well as due to plasmon damping of graphene's π electrons, and graphene doping.", journal = "Physica E: Low-dimensional Systems and Nanostructures", title = "Wake effect in interactions of ions with graphene-sapphire-graphene composite system", volume = "126", pages = "114447", doi = "10.1016/j.physe.2020.114447" }
Kalinić, A., Radović, I., Karbunar, L., Despoja, V.,& Mišković, Z. L.. (2021). Wake effect in interactions of ions with graphene-sapphire-graphene composite system. in Physica E: Low-dimensional Systems and Nanostructures, 126, 114447. https://doi.org/10.1016/j.physe.2020.114447
Kalinić A, Radović I, Karbunar L, Despoja V, Mišković ZL. Wake effect in interactions of ions with graphene-sapphire-graphene composite system. in Physica E: Low-dimensional Systems and Nanostructures. 2021;126:114447. doi:10.1016/j.physe.2020.114447 .
Kalinić, Ana, Radović, Ivan, Karbunar, Lazar, Despoja, Vito, Mišković, Zoran L., "Wake effect in interactions of ions with graphene-sapphire-graphene composite system" in Physica E: Low-dimensional Systems and Nanostructures, 126 (2021):114447, https://doi.org/10.1016/j.physe.2020.114447 . .